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YAML

name: Manual build record
on:
workflow_dispatch:
permissions:
contents: write
concurrency:
group: manual-build-record
cancel-in-progress: false
jobs:
build:
name: Build and publish cache
runs-on: ubuntu-24.04
env:
CACHIX_CACHE_NAME: ${{ vars.CACHIX_CACHE_NAME }}
CACHIX_PUBLIC_KEY: ${{ vars.CACHIX_PUBLIC_KEY }}
steps:
- name: Check out source
uses: actions/checkout@v6
- name: Validate repository configuration
env:
CACHIX_AUTH_TOKEN: ${{ secrets.CACHIX_AUTH_TOKEN }}
run: |
set -euo pipefail
test -n "$CACHIX_CACHE_NAME" || { echo "CACHIX_CACHE_NAME is not configured" >&2; exit 1; }
test -n "$CACHIX_PUBLIC_KEY" || { echo "CACHIX_PUBLIC_KEY is not configured" >&2; exit 1; }
test -n "$CACHIX_AUTH_TOKEN" || { echo "CACHIX_AUTH_TOKEN is not configured" >&2; exit 1; }
- name: Install Nix
uses: cachix/install-nix-action@v31
with:
github_access_token: ${{ github.token }}
extra_nix_config: |
extra-substituters = https://${{ vars.CACHIX_CACHE_NAME }}.cachix.org
extra-trusted-public-keys = ${{ vars.CACHIX_PUBLIC_KEY }}
- name: Configure Cachix
uses: cachix/cachix-action@v17
with:
name: ${{ vars.CACHIX_CACHE_NAME }}
authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
skipAddingSubstituter: true
useDaemon: true
- name: Determine build metadata
id: metadata
run: |
set -euo pipefail
base_version="$(nix eval --raw .#packages.x86_64-linux.default.version)"
build_stamp="$(date -u +%y%m%d%H%M)"
release_version="${base_version}+build${build_stamp}"
built_at="$(date -u +%Y-%m-%dT%H:%M:%SZ)"
{
echo "base_version=$base_version"
echo "build_stamp=$build_stamp"
echo "release_version=$release_version"
echo "built_at=$built_at"
} >> "$GITHUB_OUTPUT"
- name: Build and push to Cachix
run: |
set -euo pipefail
nix build .#default --no-link --print-build-logs --print-out-paths > "$RUNNER_TEMP/out-paths"
cachix push "$CACHIX_CACHE_NAME" < "$RUNNER_TEMP/out-paths"
output_path="$(head -n 1 "$RUNNER_TEMP/out-paths")"
cachix pin "$CACHIX_CACHE_NAME" build-record "$output_path" --keep-revisions 1
- name: Create build record release
env:
GH_TOKEN: ${{ github.token }}
RELEASE_VERSION: ${{ steps.metadata.outputs.release_version }}
BASE_VERSION: ${{ steps.metadata.outputs.base_version }}
BUILD_STAMP: ${{ steps.metadata.outputs.build_stamp }}
BUILT_AT: ${{ steps.metadata.outputs.built_at }}
run: |
set -euo pipefail
{
echo "Automated build record only. No release assets are attached."
echo
echo "- Recorded version: \`$RELEASE_VERSION\`"
echo "- Base version: \`$BASE_VERSION\`"
echo "- Build identifier: \`build$BUILD_STAMP\`"
echo "- Build time (UTC): \`$BUILT_AT\`"
echo "- System: \`x86_64-linux\`"
echo "- Source: https://github.com/$GITHUB_REPOSITORY/tree/$GITHUB_SHA"
echo "- Locked inputs: https://github.com/$GITHUB_REPOSITORY/blob/$GITHUB_SHA/flake.lock"
echo "- Workflow run: https://github.com/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID"
echo "- Cache: https://$CACHIX_CACHE_NAME.cachix.org"
echo "- Cachix pin: \`build-record\` (latest 3 revisions retained)"
echo "- CACHIX_CACHE_NAME: \`$CACHIX_CACHE_NAME\`"
echo "- CACHIX_PUBLIC_KEY: \`$CACHIX_PUBLIC_KEY\`"
echo "- CACHIX_AUTH_TOKEN: repository secret configured; value not disclosed"
} > "$RUNNER_TEMP/release-notes.md"
gh release create "$RELEASE_VERSION" \
--target "$GITHUB_SHA" \
--title "$RELEASE_VERSION" \
--notes-file "$RUNNER_TEMP/release-notes.md" \
--prerelease